I actually had to research how fighter pilots and astronauts do go to the bathroom for this comic. I originally thought they just used a catheter and everyone agreed to just never talk about that embarrassing and uncomfortable part of the job. But, no… turns out that would be far too practical to expect of pilots, and instead they piss into what’s basically an adult diaper in a bag and hope they don’t make a mess in the cabin/suit in the process. Apparently people have actually crashed multi-million dollar jets trying to use these stupid god damn things.